Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A method performed by a base station in a wireless communication system, the method comprising: transmitting, to a terminal, a control message configuring a control resource set (CORESET), the control message including first information indicating whether a control channel element (CCE) to resource element group (REG) mapping is interleaved for the CORESET, second information on an REG bundle size for the CORESET, and third information on an interleaver size for the CORESET; and transmitting, to the terminal, control information on resource elements (REs) in the CORESET based on the control message, wherein, in case that the first information indicates that the CCE to REG mapping is interleaved, the REs are identified by performing an interleaving based on the first information, the second information, and the third information.
A wireless communication system involves transmitting control information from a base station to a terminal using a control resource set (CORESET). The CORESET includes resource elements (REs) that are mapped to control channel elements (CCEs) via resource element groups (REGs). A challenge in such systems is efficiently organizing and transmitting control information to ensure reliable communication. This invention addresses the problem by providing a method for configuring and utilizing a CORESET with flexible mapping options. The base station transmits a control message to the terminal, configuring the CORESET. The control message includes three key pieces of information: first, an indication of whether the CCE-to-REG mapping is interleaved; second, the REG bundle size for the CORESET; and third, the interleaver size for the CORESET. The base station then transmits control information to the terminal, specifying the REs within the CORESET. If the first information indicates that interleaving is used, the REs are identified by performing an interleaving process based on the provided REG bundle size and interleaver size. This interleaving improves the distribution of control channels, enhancing reliability and performance in the wireless communication system. The method allows dynamic configuration of the CORESET, adapting to different network conditions and requirements.
2. The method of claim 1 , wherein a CCE in the CORESET includes a plurality of REG bundles which are interleaved based on the first information, the second information and the third information, and wherein the plurality of REG bundles include {ƒ(6j/L), ƒ(6j/L+1), . . . , ƒ(6j/L+6/L−1)}, where the j is a CCE index of the CCE, the L is the REG bundle size.
3. The method of claim 1 , wherein the interleaver size is 6.
This invention relates to data transmission and signal processing. It addresses the problem of improving data integrity and error correction in communication systems, particularly those employing interleaving techniques. The method involves a data processing system and a process for operating it. A data buffer stores incoming data bits. An interleaver, with a specific size of six, rearranges the order of these data bits. The rearranged bits are then transmitted. This interleaving process disperses bursts of errors that may occur during transmission, making them more manageable for error correction codes at the receiver. The interleaver size of six is a key parameter that influences the degree of bit scrambling and the effectiveness of error dispersion for a given communication channel characteristic.
4. The method of claim 1 , wherein a shift value for the interleaving is identified by fourth information included in the control message or a physical cell identity.
5. The method of claim 4 , wherein, in case that the control message further includes the fourth information on the shift value for the interleaving, the shift value is applied as an input offset for the interleaving.
6. The method of claim 5 , wherein, in case that the control message does not include the fourth information, the physical cell identity is applied as the input offset for the interleaving.
7. A method performed by a terminal in a wireless communication system, the method comprising: receiving, from a base station, a control message configuring a control resource set (CORESET), the control message including first information indicating whether a control channel element (CCE) to resource element group (REG) mapping is interleaved for the CORESET, second information on an REG bundle size for the CORESET, and third information on an interleaver size for the CORESET; and receiving, from the base station, control information on resource elements (REs) in the CORESET based on the control message, wherein, in case that the first information indicates that the CCE to REG mapping is interleaved, the REs are identified by considering an interleaving based on the first information, the second information, and the third information.
8. The method of claim 7 , wherein a CCE in the CORESET includes a plurality of REG bundles which are interleaved based on the first information, the second information and the third information, and wherein the plurality of REG bundles include {ƒ(6j/L), ƒ(6j/L+1), . . . , ƒ(6j/L+6/L−1)}, where the j is a CCE index of the CCE, the L is the REG bundle size.
9. The method of claim 7 , wherein the interleaver size is 6.
A system and method for data processing involves interleaving data to improve error correction performance in communication systems. The method addresses the challenge of efficiently organizing data to enhance reliability in noisy transmission environments. Specifically, the method includes interleaving data using a block interleaver with a fixed size of 6. This means the data is rearranged in a structured pattern where each block contains 6 elements, improving the distribution of errors and making them easier to correct. The interleaving process involves writing data sequentially into rows of a matrix and then reading it out column-wise, or vice versa, to spread out potential error bursts. The interleaver size of 6 ensures a balance between complexity and performance, making it suitable for applications requiring moderate error resilience. This technique is particularly useful in digital communication systems, such as wireless networks or storage devices, where data integrity is critical. The fixed interleaver size simplifies implementation while maintaining effective error correction capabilities.
10. The method of claim 7 , wherein a shift value for the interleaving is identified by fourth information included in the control message or a physical cell identity.
A method for wireless communication involves adjusting the interleaving of data symbols in a transmission to improve signal integrity and reduce interference. The technique is particularly useful in wireless systems where data symbols are transmitted in a structured format, such as orthogonal frequency-division multiplexing (OFDM) or similar modulation schemes. The problem addressed is the need to dynamically adapt the interleaving pattern to account for varying channel conditions, interference patterns, or system configurations, ensuring reliable data transmission. The method identifies a shift value for interleaving based on either a control message or a physical cell identity (PCI). The control message may include explicit instructions or parameters that define the interleaving shift, allowing for dynamic adjustments in real-time. Alternatively, the PCI, which uniquely identifies a cell in a wireless network, can be used to derive the shift value, ensuring consistency across transmissions within the same cell. This approach avoids the need for additional signaling overhead while maintaining synchronization between the transmitter and receiver. The interleaving process rearranges the order of data symbols to distribute them across different time or frequency resources, mitigating the impact of burst errors or localized interference. By using the shift value, the system can apply a specific interleaving pattern tailored to the current operating conditions, improving error resilience and overall transmission performance. This method is particularly beneficial in cellular networks, where multiple cells operate in close proximity and require coordinated interference management.
11. The method of claim 10 , wherein, in case that the control message further includes the fourth information on the shift value for the interleaving, the shift value is applied as an input offset for the interleaving.
12. The method of claim 11 , wherein, in case that the control message does not include the fourth information, the physical cell identity is applied as the input offset for the interleaving.
13. A base station in a wireless communication system, the base station comprising: a transceiver configured to transmit and receive a signal; and a processor coupled with the transceiver and configured to: transmit, to a terminal, a control message configuring a control resource set (CORESET), the control message including first information indicating whether a control channel element (CCE) to resource element group (REG) mapping is interleaved for the CORESET, second information on an REG bundle size for the CORESET, and third information on an interleaver size for the CORESET, and transmit, to the terminal, control information on resource elements (REs) in the CORESET based on the control message, wherein, in case that the first information indicates that the CCE to REG mapping is interleaved, the REs are identified by performing an interleaving based on the first information, the second information, and the third information.
14. The base station of claim 13 , wherein a CCE in the CORESET includes a plurality of REG bundles which are interleaved based on the first information, the second information and the third information, and wherein the plurality of REG bundles include {ƒ(6j/L), ƒ(6j/L+1), . . . , ƒ(6j/L+6/L−1)}, where the j is a CCE index of the CCE, the L is the REG bundle size.
This invention relates to wireless communication systems, specifically to the design of control resource sets (CORESETs) in base stations for efficient control channel element (CCE) allocation. The problem addressed is optimizing the interleaving of resource element groups (REGs) within a CORESET to improve control channel reliability and resource utilization. The base station includes a CORESET where each CCE contains multiple REG bundles. These REG bundles are interleaved based on three key parameters: first information (e.g., CORESET configuration), second information (e.g., REG bundle size), and third information (e.g., interleaving pattern). The interleaving process ensures that REGs are distributed across the CORESET in a structured manner to mitigate interference and improve channel estimation. Each REG bundle within a CCE is defined by a mathematical function ƒ(6j/L), where j is the CCE index and L is the REG bundle size. This function generates a sequence of REGs {ƒ(6j/L), ƒ(6j/L+1), ..., ƒ(6j/L+6/L−1)} for each CCE, ensuring uniform distribution and efficient resource allocation. The interleaving pattern is determined by the combination of the three parameters, allowing flexible adaptation to different channel conditions and traffic loads. This approach enhances control channel performance by reducing resource collisions and improving error resilience, particularly in dense wireless networks. The interleaving method ensures that REGs are spread across the CORESET, minimizing the impact of localized interference and improving overall system reliability.
15. The base station of claim 13 , wherein the interleaver size is 6.
16. The base station of claim 13 , wherein a shift value for the interleaving is identified by fourth information included in the control message or a physical cell identity.
17. A terminal in a wireless communication system, the terminal comprising: a transceiver configured to transmit and receive a signal; and a processor coupled with the transceiver and configured to: receive, from a base station, a control message configuring a control resource set (CORESET), the control message including first information indicating whether a control channel element (CCE) to resource element group (REG) mapping is interleaved for the CORESET, second information on an REG bundle size for the CORESET, and third information on an interleaver size for the CORESET, and receive, from the base station, control information on resource elements (REs) in the CORESET based on the control message, wherein, in case that the first information indicates that the CCE to REG mapping is interleaved, the REs are identified by considering an interleaving based on the first information, the second information, and the third information.
18. The terminal of claim 17 , wherein a CCE in the CORESET includes a plurality of REG bundles which are interleaved based on the first information, the second information and the third information, and wherein the plurality of REG bundles include {ƒ(6j/L), ƒ(6j/L+1), . . . , ƒ(6j/L+6/L−1)}, where the j is a CCE index of the CCE, the L is the REG bundle size.
19. The terminal of claim 17 , wherein the interleaver size is 6.
A system and method for wireless communication involves a terminal device configured to process data using an interleaver with a fixed size. The terminal operates in a wireless network where data is transmitted in frames, and the interleaver rearranges data bits within each frame to improve error resilience. The interleaver size, defined as the number of bits processed in a single operation, is set to 6. This fixed interleaver size ensures consistent performance across different transmission conditions by maintaining a predictable pattern of bit rearrangement. The terminal may include additional components such as a modulator, demodulator, and error correction circuitry to support reliable data transmission. The interleaving process helps mitigate errors caused by signal interference or fading, enhancing the overall robustness of the communication link. The system is particularly useful in environments where signal quality is variable, such as in mobile or industrial wireless applications. The fixed interleaver size of 6 provides a balance between computational efficiency and error correction effectiveness, ensuring reliable data delivery without excessive processing overhead.
20. The terminal of claim 17 , wherein a shift value for the interleaving is identified by fourth information included in the control message or a physical cell identity.
21. The base station of claim 16 , wherein, in case that the control message further includes the fourth information on the shift value for the interleaving, the shift value is applied as an input offset for the interleaving.
22. The base station of claim 21 , wherein, in case that the control message does not include the fourth information, the physical cell identity is applied as the input offset for the interleaving.
23. The terminal of claim 20 , wherein, in case that the control message further includes the fourth information on the shift value for the interleaving, the shift value is applied as an input offset for the interleaving.
24. The terminal of claim 23 , wherein, in case that the control message does not include the fourth information, the physical cell identity is applied as the input offset for the interleaving.
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February 16, 2021
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